Gas water heater draft hoods provide additional air for the combustion process gases, to be properly pulled out from the burner chamber (base of the water heater), into the water heater vent pipe and the chimney.
Mycelium is a block added in Minecraft the same time as the introduction of the Mushroom Biomes in Minecraft 1.9pre1. Mycelium can only be found and only can be found in Mushroom Biomes. Mycelium resembles dirt in that it can be broken with a shovel and it without a 'Silk Touch' enchanted tool it only drops dirt when broken. Mycelium also lets off a small particle effect the same as Bedrock.
Mycorrhizae: Plant-Fungus Partners. Unlike plants, fungi cannot make their own food. They absorb their food from dead organic matter, or other living organisms. The source of their food is called a substrate if it is dead, and a host if it is living.The body (mycelium) of a fungus is made of threads called hyphae.Hyphae absorb nutrients from the substrate, spread, grow, and produce fruiting bodies.he source of their food is called a substrate if it is dead, and a host if it is living. The body (mycelium) of a fungus is made of threads called hyphae. Hyphae absorb nutrients from the substrate, spread, grow, and produce fruiting bodies.